Home / 20,402.48-30,612.36-11,157.68

Finding the Fourth Proportional to 20,402.48, 30,612.36 and 11,157.68

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Solution

The fourth proportional to 20,402.48, 30,612.36 and 11,157.68 is: 16,741.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.48 : 30,612.36 = 11,157.68 : x
  2. Step 2: Convert to fraction form
    20,402.48/30,612.36 = 11,157.68/x
  3. Step 3: Cross multiply
    20,402.48x = 30,612.36 × 11,157.68
  4. Step 4: Simplify right side
    20,402.48x = 341,562,916.92
  5. Step 5: Solve for x
    x = 341,562,916.92/20,402.48
  6. Step 6: Final answer
    x = 16,741.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.